/*
 * Copyright 2009 Jesse McLaughlin (nzjess@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *         http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.travelfusion.xmlclient.handler.stax;

import java.io.InputStream;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;

import org.travelfusion.xmlclient.exception.TfXClientException;
import org.travelfusion.xmlclient.handler.ResponseHandler;
import org.travelfusion.xmlclient.handler.ResponseHandlerInterceptor;
import org.travelfusion.xmlclient.xobject.XRequest;
import org.travelfusion.xmlclient.xobject.XResponse;

import com.google.inject.Inject;
import com.google.inject.Singleton;

/**
 * @author Jesse McLaughlin (nzjess@gmail.com)
 */
@Singleton
public class StAXResponseHandlerInterceptor implements ResponseHandlerInterceptor {

  private XMLInputFactory xmlInputFactory;

  @Inject
  public void setXmlInputFactory(XMLInputFactory xmlInputFactory) {
    this.xmlInputFactory = xmlInputFactory;
  }

  public void beforeResponse(ResponseHandler<XRequest, XResponse> handler, InputStream responseStream) {
    try {
      XMLStreamReader responseReader = xmlInputFactory.createXMLStreamReader(responseStream);
      ((StAXResponseHandler<XRequest, XResponse>)handler).setResponseReader(responseReader);
    }
    catch (XMLStreamException e) {
      throw new TfXClientException("failed to create XMLStreamReader", e);
    }
  }

  public void afterResponse(ResponseHandler<XRequest, XResponse> handler, XResponse response) {
  // nop
  }
}
